1: Forms of robbery involving hoisted flags (4-5)
5: April keeps providing material for a poet (5)
8: Mad? O, yes! Mad dog! (7)
10: Famous for being incompetent? (7)
11: Mirror steps to Gore; props to Will Rogers (7)
12: Unidentified street across the Mountains (7)
13: Lecturer keeps order in House of Representatives (7)
14: Dead time after amusement in December (7)
16: On the way up, the german rats played a leading part (7)
18: Certainly, Mr. Gore welcoming Republican is bizarre (7)
21: Mark of a wound allowed to flow red (7)
23: Having a tendency to spring back, cats lie skittishly (7)
24: Expert in scriptural interpretation in Devon River to fetch sweetheart (7)
26: Surprisingly tautest act (7)
27: Waves of laborers reported (5)
28: An unthinking person for the most part, relative eats red fruit (9)